package com.lpx.demo.demo.util;

import org.springframework.util.StringUtils;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5utils {
    public static String stringToMD5(String plainText) {
        byte[] secretBytes = null;
        try {
            secretBytes = MessageDigest.getInstance("md5").digest(
                    plainText.getBytes());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("没有这个md5算法！");
        }
        String md5code = new BigInteger(1, secretBytes).toString(16);
        for (int i = 0; i < 32 - md5code.length(); i++) {
            md5code = "0" + md5code;
        }

        return md5code;
    }

    public static String passwordToMd5(String password, String slat) {
        password = stringToMD5(password + slat);
        String newMd5Password = null;
        for (int i = 0; i < 5; i++) {
            password = stringToMD5(password + slat);
        }
        newMd5Password=password;
        return password;
    }
}
